<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <meta http-equiv="X-UA-Compatible" content="ie=edge">
  <title>canvas</title>
  <style>
    body{
      background:#ddd;
      margin:0;
    }
    #player{
      background:#fff;
      width: 800px;
      height: 450px;
      margin:100px auto 0;
    }
  </style>
  <link rel="stylesheet" href="./css/player.css" />
  <script src="https://cdn.bootcss.com/jquery/3.3.1/jquery.js"></script>
</head>
<body>
  <div id="player"></div>
  <!-- <button id="play">播放</button> -->
</body>
</html>